W HLER HR 300 Electric Pressure Washer User Manual

WoHLER HR 300 Electric Pressure Washer

General information

Information about the operation manual
This operation manual is designed to help you use the Wöhler HR 300 Electric Pressure Washer safely. Keep this operation manual permanently available for reference. The pressure washer is allowed to be used only by expert personnel for its intended purposes.We accept no liability for damage caused through failure to observe this operation manual.

Notes in the operation manual

CAUTION!
This draws attention to hazards which might result in damage to the machine.

WARNING!
This draws attention to instructions whose non-observance will result in risk of injury.

IMPORTANT!
This highlights tips and other pieces of useful in-formation.

Intended use
When combined with the hose, the Wöhler HR 300 Electric Pressure Washer can be used to rinse pipelines. When combined with the high-pressure pistol, the Wöhler HR 300 Electric Pressure Washer is suit-able for the high-pressure washing of pressure-resistant surfaces.

Items supplied

5 m water supply hose with GEKA coupling
Hose drum with 30 m pipe washing hose
Transparent air hose with intake filter
Pressure gauge
Lance with pistol
5 pressure washer nozzles
1 pipe washing nozzle for hose, reverse jet
| 1 pipe washing nozzle for hose, forward and reverse jet
| 1 pipe washing nozzle for hose, rotating

Disposal
Electronic devices are not allowed to be disposed of with normal household refuse but must be dis-posed of in accordance with the environmental regulations currently in force. Damaged batteries are considered to be items of special waste and must be taken to a collection point designated for the purpose.

Manufacturer’s address

Wöhler Technik GmbH Wöhler Platz 1

• D-33181 Bad Wünnenberg
• Tel.: +49 2953 73-100
• Fax: +49 2953 73-96100
• E-mail: info@woehler.de

Technical data

Approved

water temperature

| 65 ℃

WARNING!
Spray only water. Never spray combustible or solvent-based liquids. Risk of explosion! If you mix a chemical additive in the water, wear safety goggles and a respiration mask while you use the washer. This is important to prevent the aerosols from getting in your eyes or being inhaled.

WARNING!
Never point the water jet at any persons, animals or the washer itself.

WARNING!
Never use the water jet on any materials containing asbestos or other harmful sub-stances.

WARNING!
Never switch on the electric pressure washer when the power cable, hose or spray gun is damaged.

WARNING!
Make allowance for the weight of the washer during transport and storage (38 kg).

CAUTION!
Before you start the pump for the first time, check if it is filled with enough oil; see section 5.2. The pump is filled by the manufacturer. When delivered, the pump is closed by a transportation cap. Replace this transportation cap with an operation cap before you start the pump for the first time, see section 5.2.

CAUTION!
Use only original Wöhler accessories and Wöhler spare parts.

CAUTION!
While the electric pressure washer is in storage, make sure there is enough ventilation for the washer to dry out.

CAUTION!
Never leave the electric pressure washer ON when the spray gun is closed.

CAUTION!
Do not kink the high-pressure hose. Do not pull it over sharp edges.

CAUTION!
Keep a minimum distance of 30 cm from the object being washed so that it does not suffer any damage.

Parts of the washer

1. Spray gun
2. Lance
3. Hose reel
4. Pump
5. Motor
6. Oil level window
7. Oil filler opening
8. Transparent air hose with intake filter
9. Pressure regulator

Washing pipes using the hose

Assembly

• Mount the handle on the chassis.
• Fasten the handle in place using the supplied screws and washers.
• Insert the hose drum as follows:
• Pull out the two bolts (1) from the drum holder and turn it one quarter of a revolution.
• Insert the drum so that the four rubber spacers on the grip board make contact.
• Let the bolts latch home.
• Connect the black connection hose with the hose drum (2).
• Plug the black 1.5 m connection hose onto the quick coupling on the motor.
• Connect the transparent air hose with intake filter to the nipple on the quick coupling.

Washing pipes using the hose

• To connect the water supply, screw the sup-plied GEKA coupling into the lower female thread on the motor.
• Connect the water hose to the coupling and to a water tap.

IMPORTANT!
If you don’t want to use the supplied water hose you can replace the GEKA coupling with the Gardena coupling that is also supplied.

Filling the pump with oil

CAUTION!
Using the electric pressure washer with no oil or with too little oil in the pump is certain to result in damage. Check the oil level each time before you use the electric pressure washer! When the pump is supplied, it is full of oil.

CAUTION!
Before using the washer for the first time: Unscrew the transportation oil cap and dis-pose of it. Screw in the supplied red operation oil cap. (The operation oil cap has small holes through which any surplus air can escape when the oil becomes warmer and expands during operation.)

The following oil must be used:

• SAE 15W-40 or SAE 75W-90
• Tank capacity: 500 ml
• Each time before use, check the oil level at the oil level window and top up with oil as re-quired. The level of oil in the pump must reach half way up the oil level window.
• Proceed as follows: .
• Switch off the motor.
• Place the washer in the upright position.
• Unscrew the oil cap and fill in oil.
• Carry out the first oil change after 20 hours in operation and then after every 150 hours.

Visual inspection
Make sure that the washer and especially the power cable are undamaged.

Start-up current limiter
It is always recommended to install a start-up current limiter between the power socket and the washer, particularly in the case of a B16 fuse. This can prevent fuse failure when the washer starts up.

Washing pipes

• Screw a suitable pipe washing nozzle onto the male thread of the pipe cleaning hose.
• Reverse jet 3 x 30° with ¼ inch female thread
• Forward and reverse jet: 1 x 0° forward, 3 x 15° reverse with ¼ inch female thread

Washing pipes using the hose

• Rotating jet 3 x 25°, with ¼ inch female thread
• Insert the hose in the pipe.

CAUTION!
If you switch on the washer without first having fastened the hose or inserted it into a pipe, the hose will whip out of control: Risk of injury!

Switching on the washer

• Check that the rotary switch is in the Off position (O).
• Turn on the water tap.

CAUTION!
The washer must be under water pressure before the washer is switched on. This forces the air out of the system as the first step!

CAUTION!
Under no circumstances is the electric pressure washer allowed to be used without a water supply. This would damage the pump by wearing out the seals within a very short time.

• Set the rotary switch to position I.
• Press ON in the control panel.

Pressure regulator
Use the pressure regulator to set the pressure. When delivered, the pressure regulator is pre-set to the lowest level.

• Turn clockwise: The pressure will be in-creased
• Turn counter-clockwise: The pressure will be reduced.

IMPORTANT!

The lower the pressure, the higher the flow rate.

Washing pressure-resistant surfaces using the lance

Assembly for washing surfaces using the lance

• Mount the handle on the chassis.
• Fasten the handle in place using the supplied screws and washers.
• Insert the five supplied lance nozzles, each with a different color, into the openings in the grip board so that they are always ready to hand.
• Insert the silver-colored hook for the lance into the holes provided in the handle and tighten the corresponding nuts using a size 14 open-end wrench.
• Plug the black 1.5 m connection hose onto the quick coupling on the motor.
• Connect the transparent air hose with intake filter to the nipple on the quick coupling.
• To connect the water supply, screw the sup-plied GEKA coupling into the lower female thread on the motor.
• Connect the water hose to the coupling and to a water tap.

IMPORTANT!
If you don’t want to use the supplied water hose you can replace the GEKA coupling with the Gar-dena coupling that is also supplied.

• Plug the other end of the black connection hose onto the hose connection on the pistol.
• Screw the lance onto the pistol and secure it with the pistol’s union nut.
• Plug the matching spray nozzle for your job onto the lance.

Washing pressure-resistant surfaces using the lance

The following nozzles are available:

CAUTION!
The instructions in chapter 5.2 to 5.4 of this operation manual must be followed at all cost also in connection with washing by means of the lance!

Bypass mode when working with the lance
The washer is in bypass mode when the spray gun is not activated while the water supply is connected and the washer is ON. In this case the pump lets the water circulate.

CAUTION!
Allow the washer to run in bypass mode as little as possible and certainly for no longer than 2 minutes. Otherwise the water temperature will rise, causing damage to the pump’s components.

Thermal over-pressure valve
The pump is equipped with a thermal overpressure valve. If the temperature in the water pump rises above 65 °C due to overlong operation in bypass mode, a gush of hot water will escape through the valve in order for the temperature in the pump to drop when cold water is drawn in again. The valve will then close again.

WARNING!
Never change the settings on the thermal over-pressure valve.

When you have finished washing

• Switch off the washer.
• Disconnect the power plug from the power supply.
• Stop the water supply.
• If you have been working with the lance, press and hold the pistol trigger until all the residual water has run out.
• Lock the pistol trigger.

Maintenance

CAUTION!
The washer is not allowed to be connected to the power supply under any circumstances while you are carrying out any maintenance work.

Maintenance list

the transparent air hose, see Fig. 1, Item 8)

Faults

Faults during operation with the hose drum

Automatic switch-off function
To prevent the pump from overheating during operation with the lance in bypass mode (see section 6.2), the washer will switch off automatically after 2 minutes. Overheating cannot result from working with the hose drum. We recommend therefore to deactivate the automatic switch-off function on the control panel. To enter the setting mode for the automatic switch-off function, proceed as follows:

• While pressing and holding the OFF button, briefly press three times on the ON button. The three LEDs will light up (Green, Yellow, Red).

• To activate the setting mode, briefly press on the ON button The green LED will flash

Deactivate automatic switch off function

• When the setting-mode is activated (see chapter 9.2), press and hold the OFF button for 2 seconds until the green LED and the yellow LED flash in alternation.
• Briefly press the OFF button once again in order to switch off the washer.

Activate Automatic switch-off function

• When the setting-mode is activated, press and hold the ON button for 2 seconds until the green LED and the yellow LED flash in alternation.
• Briefly press the OFF button once again in order to switch off the washer.

Faults when working with the lance

• If the washer switches off after the lance has been in operation for two minutes, you must link the lance to the electric pressure washer on a once-only basis.
• Briefly press ON in the control panel in order to switch on the washer.
• The 3 LEDS will light up one after the other.

Step 1

• First press and hold the OFF button.
• While pressing and holding the OFF button, press and hold the ON button as well. First the green LED will light up and then it will begin to flash.
• Now release the buttons.

Step 2

• Hold the pistol handle in the pulled position.
• The red LED in the control panel will light up after one second.
• Press the OFF button in order to end link mode.

electrical current of the unit is significantly higher when it is switched on than when it is in continuous operation. If there are other current consumers in the same circuit, the circuit breaker can be triggered.| Disconnect all other units in the same circuit.
If available, connect to a C- fused circuit; via CEE adapter, if corresponding socket is available.
The pump is running but the washer fails to reach the required working pressure| The pump is sucking in air| Connect the hoses tightly
The valves are dirty or worn| Clean or replace the valves
The nozzle is faulty or worn| Check and replace
The water pressure is low| Turn up the water supply as far as possible
The intake filter is dirty| Clean the filter with water or replace it
Fluctuations in pressure| The valves are worn, dirty or clogged| Clean or replace the valves
The pump is sucking in air| Clean or replace the pump
The intake filter is dirty| Clean the filter with water or replace it
The pressure drops during use| Water drawn from an external tank| Connect with the water pipe
The nozzle is worn, dirty or clogged| Clean or replace the nozzle
The inflow water is hot| Lower the water temperature
The pump is very loud| The pump is sucking in air| Connect the hoses tightly
---|---|---
The valves are worn, dirty or clogged| Clean or replace the valves
The bearings are worn| Clean the bearings or re- place them if necessary
Water leak| The seals are worn| Service required
Oil leak| The seals are worn| Service required
The motor fails to start when switched ON| The plug is not inserted correctly| Check the plug, cable and switch

Warranty and service

Warranty
Each Wöhler HR 300 Electric Pressure Washer is tested in all its functions at the factory and does not leave until it has passed detailed quality checks. The washer comes with a 12 month warranty starting on the date of sale and assuming that it is used as intended. This warranty does not cover the costs of transport and packaging for the washer in the case of repair. This warranty will become null and void if repairs and modifications are carried out by unauthorized third-parties or if it is verified that the pump was operated with too low an oil level.

Service
Service is a top priority at Wöhler. It goes without saying that we will be here to help you after the warranty period expires.

• If required, send the washer to us for repair and we will return it to you by our parcel delivery service within just a few days.
• Immediate assistance is available from our technical support over the phone.

EC Declaration of Conformity

The manufacturer: WÖHLER Technik GmbH Wöhler-Platz 1, D-33181 Bad Wünnenberg Declares that the product:

Product name: Wöhler HR 300 Electric Pressure Washer
complies with the key safety requirements of the Machinery Directive 2006/42/EC as well as with the safety requirements laid down in the Guidelines of the Council for the Harmonization of Legal Requirements of the Mem-ber States Concerning Electromagnetic Compatibility (2014/30/EU). The following standards were used to assess the product: EN 55014-1:2017

• EN 60335-2-79:2012 EN ISO 12100:2010 EN 55014-1:2017  27/09/2023 Johannes Lötfering, Geschäftsführer/Managing Director

Points of sale and service Germany Wöhler Technik GmbH Wöhler-Platz 1 33181 Bad Wünnenberg

• Tel.: +49 2953 73-100
• info@woehler.de
• www.woehler.de

USA
Wohler USA Inc. 208 S Main Street Middleton, MA 01949 Tel.: +1 978 750 9876 www.wohlerusa.com Italy Wöhler Italia srl Via Coraine 21 37010 Costermano VR Tel. +39 045 6200080 info@woehler.it www.woehler.it

References

• Wöhler France SARL
• Wöhler Nederland B.V.
• Wohler USA Inc.

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